参数资料
型号: MC68HC05K1VDWR3
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PDSO16
封装: SOIC-16
文件页数: 86/154页
文件大小: 1544K
代理商: MC68HC05K1VDWR3
Central Processor Unit (CPU)
CPU Registers
MC68HC05K0 MC68HC05K1 — Rev. 2.0
Technical Data
MOTOROLA
Central Processor Unit (CPU)
37
3.3.1 Accumulator
The accumulator (A) shown in Figure 3-2 is a general-purpose 8-bit
register. The accumulator holds operands and results of arithmetic and
non-arithmetic operations.
3.3.2 Index Register
In the indexed addressing modes, the CPU uses the byte in the index
register (X) to determine the effective address of the operand. (See
Indexed, 16-Bit Offset.) The 8-bit index register shown in Figure 3-3
can also serve as a temporary data storage location.
Bit 7
654321
Bit 0
Read:
Write:
Reset:
Unaffected by reset
Figure 3-2. Accumulator (A)
Bit 7
654321
Bit 0
Read:
Write:
Reset:
Unaffected by reset
Figure 3-3. Index Register (X)
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